Brazing machine



June 29 1926. f 1,590,210

T. C. .SHEEHAN BRAZING MACHINE Filed April 15, 1925 2 sheets-sheet 1 I ATTORNEY W ATTORNEY 1,590,210 T. C' SHEEHAN BRAZING MACHINE Filed lApril 15 1925 2- sheets-sheet '2 INVENTOR June 29 1926.

Patented June 29, 1926.

UNITED SFATESPATENT OFFICE.Y

THOMAS C. SHEEHAN, Ol1 UPPER MONTCLAIR, kNEW JERSEY, ASSIGNOR TO "WADE @t BUTCHER CORPORATION, A CORPORATION OF NEW JERSEY.

BRAZING' MACHINE.

Application filed April 15, 192'5.

This invention resides in a brazing machine, particularly for brazing knife blades and handles. Its main object is the production of a machine in which the brazilie" operation is automatically terminated after a predetermined heating interval, in order that uniform results in successive operations will be insured. Another object of the invention is the production of such a machine in which the brazed assemblages of parts will be automatically and uniformly cooled. Still another object of the invention is the production of such a machine having a plurality of like brazing units, in order that one operator can successively feed parts to be brazed to the several units, and take the finished product therefrom, while the brazing operation is going on in other units, thus greatly increasing production, and greatly decreasing cost, over the methods heretofore employed in such work. With these and other objects not specifically mentioned in View, the invention consists in cer tain constructions and combinations which Will be hereinafter fully described and then specifically set forth in the claims hereunto appended.

- In the accompanying drawings, which form a part of this specification and in which like characters of reference indicate the same or like parts, Fig. 1 is a front elevation of a machine constructed in accordance with the invention; Fig. 2 is a. detail view, partly sectional, of one of the clutch mechanisms used in the machine shown in Fig. 1; Figs. 3 and 1- are respectively front elevation and side elevation of one of the brazing units of the machine shown in Fig. l, but on a larger scale and partly sectional; and Fig. 5 is a detail plan view taken on the line 5 in Fig. 4l. l

In carrying the invention into effect, there is provided mechanism for heating an assemblage of parts to be brazed together, and means for automatically incapacitating said mechanism after a predetermined heat ing interval, whereby successive assemblages will be uniformly treated. In the best constructions, said means is also operative to rehabilitate said mechanism, when manually actuated for this purpose; means for automaticallQ cooling the brazed assemblages is providec g means for preventing the tarnishlng of a highly-polished surface of' the Serial No. 23,435.

blades during the heating operation is provided; the heating means 1s movable in and out of operative positlon; the cooling means ,is also movable in and out of operative poillustrate the invention is butvone of many possible concrete embodiments of the same. The invention, therefore, is not to be restricted to the precise details of the structure shown and described.

Referring to the drawings, 6 indicates pillars upon which the various brazing units of the machine are mounted. These pillars may be supported in any suitable manner, as on a work bench, not shown. The brazing units are all alike, and for this reason a description of one will suiiice for all.

When the machine is to be used for the purpose of brazing knife blades and handles, as in the machine shown, each pillar 6 can ries at its tcp a sleeve 7 supporting a depending bar 8, and the latter carries a clamp 9 for engaging andsupporting the bolster of the blade, as clearly shown in Figs. 1, 3 and t. The blade has the usual tang inserted in the usual hole in the handle, With the brazing material. lThe clamped blade supports the handle in proper position for the brazing operation.

The mechanism for heating the assemblage of blade and handle, or other parts, to be brazed, is also carried by the pillars 6. This mechanism also includes two heaters between which the assemblage of parts is positioned during the brazing operation, and these heaters are movable in and out of operative position. lilith this end in view,

the heaters include gas` flame nozzles 10 y mounted on swinging arms 11, pivoted at 12 to a yoke 13 fast on one of the pillars 6. Each nozzle 10 is provided with a 'cutoff valve 141, and is connected with a hose 15 which conducts gas to it from a. common gas supply pipe 16. y Y

The two heaters are shown in full lines in Fig. 5 as they lie in inoperative position, In the same ligure their operative position is in vdicated 'by-the dotted lines. Theyv are moved into operative position by a manualoperation and through the agency of the 'following parts. Each swingingarm 11 is provided with a stud 17 engaging Va slot in *an arm 18 which is swingable about a pillar 6 just above the yoke 13.v Each arm 18 is 'pivotally connected with a link 19,*and each link Y19 is engaged by the lower end of a lever 2O which is u-lcrumed at 21 to va post v22 projecting from and supported by the sleeve 7 before referred to. The v lever 2O is 'bent over the top Vot ythe lpillar G, and when 'its 'free Vend .is lifted, the links 19 aot'upon the a 1ms A18 to swing the latter. By means of the stud and slot Connections of these arms with the yarms 11 carrying the heating nozzles, the llatter are 'swung from Itheir inoperative position, eine on-eithers'ide ofthe assemblage ot `parts Ltobe brazed. The blade o'lav-knifeto be ,brazed in the machine is high-ly iolished, and

-toprevent the flame or the heaters from tarnishing the highly `polished surrace ot `the same during the brazing operation, each I heatercarriesa mask 23 which moves in and out of operative position with the nozzles 10. The two masks surround 'the parts Vto be Abra'zed when in operative position, and the gas llame plays upon the liandle liust above them at Ithe one spot where the brazine oc". 7 ZD eur-s, but iskept laway from the highly polishedblade, Vthus avoiding the necessity for repolishing Ythe i'same after the'brazing operation, Y y

:To -hold the assemblage'otparts steady during Vthe brazing operation, a.plunger 24 Vi-sprovided. rl`his plunger reciprocates in a hearing l25 supported bythe-*sleeve 7 before referred to. lt has a collar 2 6 near its lower end, and between this collar and the bearing '25 a compression spring 27 is coiled varound the plunger. The tendency of this spring is toiorce the plunger down on the top ot the knife handle to steady the latter, as shown in the middle unit oi '1. lBut when a .blade and handle 'are `to be introduced in the vmachine, or taken out thereof,l this plunger is raised by means ot a lever 28 engaging its upper end at 29, the lever being Euloi-umedat 30 to a bar supported by the sleeve 'Tb-etere referred to. Above the bear- 'ing the plunger J4 carries a collar 32, and

when V'the plunger is raised to Tree it'from a lknife handle below, the under side ot this 'lar is engaged by a spring-latch 35 fulcrnnied onfa pin 34 carried by the bearing V25. To cause the plunger to engage a knife handle below, the spring-latch is swung out oit engagement with the collar 32, whereupon the ing 27 forces the plunger down Vinto engagement with the handle, carrying the lever 28 with it.

In order that successive brazing operations may produce uniform results, means V.tor in capacitating the heating mechanism after a `member 41.

predetermined 4heating interval isfp'rovided. This means coacts with the lever 2O which, it will be4 remembered, is manually operated to move'the'heating vnoziles 10, 10 vinto operative position. It is utomatic in its action however. rlhe several bre- Zing units ot the machine are all connected by clutch mechanism with acominon power sha-itt 35 journaled in suitable hangers 86 depending from the ceiling ot the room in which the machine is operated, in a well known manner. Each unit is provided with a timer arranged to Vbe intermittently `driven by the `power sha'tt 35. To this end, there isprovided 1for each unita timing-cam 3? which is loose onth'e shaft 35 and confined between one of the hanger-'5,36 and a collar 38 'pinne'd onf-tfhe shaft. Y This timing-Cain is connected 'by means otpiiisBQ with'the loose member "4() ofa clutch `inec'hanism 4G-41', 'iihieh 41 is the tast memberpinned to 'the shaft. The timing-cam '2f' has an annular wall Aprovided with an opening 42 at one point on its 'pei-'im'- eter. Working through ythisopening at the proper times is -a bar 43 and a roller 44, the bar being connected with Lthe lever 20 byfmeans of a link 45. The loose clutch lmember 40 is `provided with Aan 'annular groove around its perimeter, and in this groove rolls ashiting roller 46 'earried'by a bell-crank 4 supported by a bracket 48, which in turn fis supported by the hanger 36 and 'which also vsu'p'iior'ts 'the bar 48. The bell-crank??? is connectedwijth the leverV 2O by means of links-49', 50.

1When the lever '2O ils actuated tomov'e the heating nozzlesinto operative position, the bar 43 and roller 44 are'movedthrough 'the opening 42o-f vthe 'timing-cam Simultaneously,y the loose clutch member 40 is moved into engagement with thelitast clutch As a result ol these simultaneous movements, a Vpiedeterniined heating interval is restablished and begun. 'lt is terniinated when the timingc`am has made one revolution, and the roller 44 is treed to vpass outthrough the opening 42; spring 5l, connected with th'e sleeve Tand with the lever 20, then pulls `ihe'roller out of engagement withl the cani,'sliifts the clutch member 40 out ot eiigagement 'with the clutch inei'nber 41, andfmoves 'the healing rnozzles `to inoperative p'osition, si'nuilt'an'ceus ly. Thus, vbymeans oit 'the incchanism so iar described, the heating mechanism automatically incapacitated after a predetermined heating 'intervalg and 'at any Atime thereafter it maybe manually rehabilitated,

Vby actuation of the lever 2O I, il)

and strap 55, the latter ruiming over a pulley 56 suitably supported by a bracket 56 which in turn is supported by the yoke 13 before referred to. Connected with the upper part of the tank are two valves 57 controlling inflow of water to the tank. Connected with each of these valves is a hose 58 for conducting water from a common supply pipe 59 to the top of the tank. Connected with the bot-- tom of the tank is a hose 60 which is also connected with a common drain pipe 61. When water is sprayed into the tank through the oppositely disposed valves 57,57, it liows by gravity out through the hose 60. Each valve 57 is provided with an operating handle 62 which engages a stud 63 and opens the valve when the tank is moved upwardly, and which engages a stud 64 and closes the valve when the tank moves downwardly.

C mover. shown and hereinbetore The studs 63 and 6st are carried by depending bars 65 bolted to the sleeve 7 before referred to.

It is desirable that the tank be automatically moved upwardly as soon as the brazing operation in its unit is completed. To this end, the actuating lever 2O is provided with an arm 66 which is pivotally connected with the upper'end of a link 67, the lower end of this link being pivotallyv connected with a short arm 68 of a bell-crank 68-69 fulcrumed at 7() to a bracket 71 carried by the pillar 6 before referred to. The long arm 69 of the bell-crank 68-69 is pivotally connected with a latch 72 engaging a stud 73 carried by a bar 74 connecting the two arms 53, 53 which support the tank 52. The latch 72 is normally kept in engagement with the stud 73 by the action of a spring 75 connected with the free end of the long arm 69 of the bell-crank 68-69 and with the latch 72. W'hen the actuating lever 2O is itself actuated by the spring` 51 at the end of a heating interval, it pulls the link 67 upwardly, and this in' turn raises the tank over the hot assemblage of parts whereupon the valves 57 are opened and water is sprayed on said assemblage to cool it. At any time after the assemblage has been suthciently cooled, the machine operator disengages the latch. 72 from the stud 73 and permits the tank to drop back to its lowermost position, whereupon a brazed assemblage may be unclamped and removed from the machine and an unbrazed assemblage substituted therefor. After this is done, and the lever 20 is again actuated to start the operation of the unit, the latch 72 automatically reengages the stud 73 ready for tank operation at the end of the heating interval.

Vilhen the machine includes a series of brazing units, as shown, there is provided a prime mover, and means for independently connecting each of said units, or the ineapaeitatng means thereof, with said prime described, each unit is provided with means for intermittently connecting the same with the power shaft 35. This shaft carries a speedchanging mechanism consisting of three gears 75, 76 and 77 which are adapted for selective engagement with pinions 78, 79 andv the worm-wheel 83 is rotated by double worm gearing 84 deriving its motion from a prime mover in the form of an electric motor 85 the speed of which is regulated by means of a rheostat 86. Y y

y In the left hand unit of Fig. 1, the tank 52 is shown in operative position for cooling a brazed assemblage of parts. In the middle unit in the same ligure, an assemblage is shown in position to be operated upon; and in the right hand unit, the clamp is shown in posit-ion to receive an assemblage to be operated upon. In operating the machine, the operator places an assemblage of parts in position to be operated upon, starts that unit,

and then goes to another unit and repeats the operation, taking out a brazed assemblage and inserting an unbrazed assemblage in one unitwhile the brazing operation is going on in the other units. each machine thus depends upon the rapidity and ease with which the operator can replace -brazed assemblages by unbrazed assemblages,

and of course no skilled labor is required for this work, the essential functions of the machine units being performed and terminated automatically in each` instance. In view of the foregoing description of the machine and of the operation of its units, a further detailed description of the machine as a whole is deemed to be unnecessary and is therefore omit-ted in the interest of brevity.

What is claimed is:

1. The combination with mechanism for heating an assemblage of parts to be brazed together, of means including a clutch-actuated timer and operative connections for automatically incapacitating said mechanism after a predetermined heating interval.

2. The combination with mechanism for heating an assemblage of parts to be brazed together, of means including a clutch-actuated timer and operative connections for automatically incapacitating said mechanism after a predetermined heating interval, said means being also operative to rehabilitate said mechanism.

3. The Combination with mechanism for heating an assemblage of parte to be brazed together, of means including a clutch-actun The number of units to ated timer and operative connections for automatically incapacitating said vmechanism after a predetermined .heating interval, said means being valso manually operative to rehabilitate said-mechanism. Y y a. The combination with mechanism t'or heating Aan vassemblage of parts `to 'be brazed together, of means including a clutch-actin ated timer and operative connections iior yautomatically incapacitating said mechanism after a predetermined heating interval, and means `for automatically cooling the bra-Zed assemblage. v

15. Ther combi-nation with mechanism for heating an assemblege-ozt parts to bebrazed together, of means ii'iclnding a clntcheaotnatedtimer and operative connections lo" au# tomatie illy incapacitating said mechanism aiter a predetenminedheating interval, and means actuated by said incafpacitating .means for automatically cool-ing the bra/'Led assemblage. i 1 Y (i. rThe .combination with mechanism llor lheatingjan assemblage of part-s to be braced together, of means including a clutch-actu fated itimer Vand' operative connections y'lor automatically incapacitating said mechatnism after va predetermined heat-ing inter-val, said mechanism 'including two heatrs between which said assemblage is positioned.

il'. v'The combination with mechanism' for heating an assemblage of parts to be -brazed together, tof vmeans' for automatically incafpacitating said mechanism after a predetermined :heating interval, said mechanism including ftwo heaters between which said assemblage is positionef-l` and means or'preventing said `heaters Afrom tarnishing said iassemb'lage.

8. The combination with mechanism for heating an .assemblage .of parts to be brazed together, of means for aaitomatically` yincapacitating said mechanism alter .a predetermined 'heating intervafl, said mechanism including -two heaters :between which said assemblage A.is positioned, and a mask between said heaters and said assemblage for preventing said heaters. from tarnishing said assemblage.

The combination with lmechanism ttor heating ran assemblage of parts `to be fbrazed together, of means including a clutch-actuated timer and oper-a e connections for antoniatically incapacitating lsaid mechanism 'after a predetermined heating inter-val, said mechanism including ztvvo 4heaters between which said assemblage is positioned, and means for supporting said heaters fto permit them to befmoved inand out of operative position. f

10./rl`he combination-with mechanism for heating an assemblage of parts vtobe br'azed together, of means for automatically incapacitating said .mechanism after a predetermined heating interval, niechanismim ,Leoncio cluding tivo heaters between which said assemblage is positioned, .and Vswinging :arms carrying said heaters. f

11. The 4combination with mechanism for heating an assemblage of parts to be brazed together, ot means including a V.clutchactw ated `timer vand operative connections yfortantomatically incapacitating said mechanism after predetermined heating interval, said mechanism including vtwo heaters, means for supporting` vsaid heaters to permit lthem 4to be moved in and `out of operative position, and means for supporting :said assemblage ietween said heaters. i

'12.v The combination with .mechanism for heating an asseinblage of pants to be .brazcd together, .oet means including a clutch-actuated-'timer and operative .connections ier auf tomatically incapacitating saidy mechanism after apredetermined heating interval, said mechanism 'including tivo heaters, Ymeans ,for supporting said heaters to permit them .to benino-ved in and ont of :operative position, and a clamping `device -for stationarily supporting said assemblage between @said heaters. y Y Y 13. The combination with mechanism for heath-igen assemblage of ,parts to be brazed together, of means, tor automatically inca paeitat-ing Asaid mechanism after a prede-f tei-mined heating interval, ysaid means fincluding .a clutch-actuated timer, .and `operati-ng connections between said .timer and said mechanism.

14. The combinationwith -meohanlisnifiior heatingan assemblage o tpants -to be bnazed together, :of means for automatically inca-- pacitating lsaid mechanism y:alter a predetermined heating inter-val, said nmea-ns riii-. c-luding arclutc'h, and operatrngconnec'tions between said clutch Vand said mechanism.

15. The `combination with `.mechanism for heating an assemblage oit parts to ybe baia-ned together, of means vlorautom-atically incapacitating said mechanism after a predetermined liea-ting interval, said means includi-ng'a clutch,` and a timer and opcratingfcon- .nections `between said clutch and said ftimer and said mechanism. l v

16. r`lhe..eombination Vwith .mechanism ,ster .heating an assemblage of parts A:.tovbe 'bra-eed together, of means xfor automaticallyT incapacitating said ymechanfism after a {predetermined hea/ting interval, said means lincluding an actuating lever, rotary timer fhaving a' circular pathway open Aat one point, a

)bar connected with said lever and carfryiincf Iii) spring inactive for a predetermined interval.V

18. The combination with n'lechanism vfor heating an assemblage ci parts to be brazed together, of means for automatically incapacitating said mechanism after a predetermined heating interval, said means including a clutch-actuated timer and operative connections including a lever, and a toggle mechanism connecting said lever with said heating mechanism.

19. The combination with mechanism for heating an assemblage oi parts to be braaed together, ot' means for automatically incapacitating said mechanism after a predetermined heating interval, said means inclu-ding an actuating lover, a toggle mechanism connecting said lever with said heating mechanism, a spring for moving said lever, and a timer for holding said spring inactive for a predetermined interval.

20. The combination with mechanism for heating an assemblage of parts to be brazed together, of means tor automatically incapacitating said mechanism after a predetermined heating interval, and means for automatically cooling the brazed assemblage, said cooling means including a water tank which is movable in and out of operative position.

2l. The combination with mechanism tor heating an assemblage of parts to be brazed together, of means for automatically incae pacitating said mechanism after a predetermined heating interval, and means for automatically cooling the brazed assemblage, said cooling means including a movable water tank actuated by said incapacitating means.

22. The combination with mechanism for heating an assemblage oiparts to be brazed together, of means for automatically incapacitating said mechanism ai'ter a predetermined heating interval, and means for automatically cooling the brazed assemblage, said cooling means including a movable water tank provided with intake valves operated by the movement of said tank.

23. The combination with mechanism for heating an assemblage of parts to be brazed together, oit means for automatically incapacitating said mechanism after a predetermined heating interval, and mean-s for automatically cooling the brazed assemblage, said cooling means including a movable Water tank, and connections between said tank and said incapacitating means for moving said tank into operative position as said incapacitating means acts.

2a. The combination with mechanism for heating an assemblage ci parts to be brazed together, of means for Vautomatically inca-V pacitating said mechanism after a predeterminedheating interval, and means for automatically cooling the brazed assemblage, said cooling means including a movable water tank, and connections between said tank and said incapacitating means for mov* ing said tank into operative position as said incapacitating means acts, said connections including a trip latch for permitting movement of said tank out oi operative position without disturbing said incapacitating means.

25. The combination with mechanism for heating an assemblage of parts to be brazed together, of means for automatically incapacitating said mechanism after a predetermined heating interval, and means for automatically cooling the brazed assemblage, said cooling means including a movable water tank actuated by said incapacitating means, and means for counterbalancing said tank to relieve the load on said incapacitating means.

V26. rlhe combination with a series of mechanisms for heating assemblages of parts to be brazed together, of a series oi means including a clutch-actuated timer and operative connections for automatically incapacitating said mechanisms after predetermined intervals, a prime mover, and means for independently connecting each of said incapacitating means with said prime mover.

27. The combination with a series of mechanisms for heating assemblages of parts to be brazed together, of a series of means including a clutch-actuated timer and operative connections for automatically incapacitating said mechanisms after predetermined intervals, a prime mover, means `for independently connecting each of said incapacitating means with said prime mover, and speed-changing mechanism between said prime mover and said connecting means.

In testimony whereof, I have signed my name to this specification.

THOMAS C. SHEEHAN.

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